AZDesertRat
In Memoriam
You should get right at 3000 total TDS out of 16 oz of good quality DI resin. I don't know what style or capacity of DI filter you have but if you assume it holds 16 oz (standard sized 10" canister types hold 24 oz) then with an incoming TDS of 9 the DI will get you about 333 gallons per pound (16 oz). This is a rough guide but it proves to be surprisingly accurate in most cases.
